Diffraction

  Interference is a fundamental phenomenon in wave physics that occurs when two or more waves meet and interact. Depending on the relative phase of the individual waves, this interaction can increase or decrease the overall amplitude of the resulting wave.   Constructive Interference Constructive interference, a beautiful phenomenon, occurs when two waves meet so that their crests (peaks) and troughs (valleys) align. This alignment causes the waves to add together to create a new wave with a larger amplitude than either of the original waves.   Key Characteristics: Crests align with crests, and troughs align with troughs.   The resulting wave has a larger amplitude than the individual waves.   It occurs when the path difference between the waves is an integer multiple of the wavelength.   Destructive Interference Destructive interference, a powerful force, occurs when two waves meet so that one wave's crest aligns with another's tr...